74689973 has 2 divisors, whose sum is σ = 74689974. Its totient is φ = 74689972.

The previous prime is 74689963. The next prime is 74689981. The reversal of 74689973 is 37998647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71944324 + 2745649 = 8482^2 + 1657^2 .

It is an emirp because it is prime and its reverse (37998647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74689973 - 2¹⁴ = 74673589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74689913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37344986 + 37344987.

It is an arithmetic number, because the mean of its divisors is an integer number (37344987).

Almost surely, 2^74689973 is an apocalyptic number.

It is an amenable number.

74689973 is a deficient number, since it is larger than the sum of its proper divisors (1).

74689973 is an equidigital number, since it uses as much as digits as its factorization.

74689973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The square root of 74689973 is about 8642.3360846475. The cubic root of 74689973 is about 421.1344481378.

The spelling of 74689973 in words is "seventy-four million, six hundred eighty-nine thousand, nine hundred seventy-three".